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Q9. An olive oil centrifugal pump has an outer diameter of 650 mm and an outer blade width of 9.5 mm.

It runs at 475 rpm; the outlet radial velocity is 5.5 m/s and the outlet tangential velocity is 6.6 m/s.

(a) Sketch the velocity diagrams of the centrifugal pumps. (6)

(b) Calculate EACH of the following:

(i) The blade outlet angle;

(ii) The mass flow rate;

(iii) The power.

Note: ρ_{olive oil} = 920kg/m³